This livejournal community is still active though not incredibly busy. If you need a good bottom!harry hit (so to speak), this is a good place to look. People post recs and also respond to fic searches. A must for those who love submissive harry.
This is a still active (last update 7/2009) and extensive rec listing of HP/DM fics organized by Kink and then author. It also includes a fairly large listing of bottom!harry and bottom!draco fics. Each fic includes a summary and category although no tags.